Improvement in wagon-brakes



' w. H. BRADT.

Wagon Brake.

Patented Dec. 14, 1869.

ings, forminga :part of this specification, in whichi i cured to the end o i' the wagon-pole,` of aT-head `and i `the invention.

tnitrd guette para and.

`To all wheat it may concern:

Be itknown that I, WILLIAM H. BRADT, of the W'ILLIAM' Bie-ADT., oir-NEW SCOTLAND; New' YORK;

Y Letters Patent No. 97,867, dated December 14, 1869. v

imp novEMl-:sNTIN wAGoNfBRAKEs.

Y The Schedule referred to nthese Letters Patent andlmakixig part of the same' town of New Scotland, county of Albany, .State .of

-Newl'ork, have invented certain Improvements in Wagon-Brakes; and 1, do hereby Ydeclare that the following is a full, clear, and exact description thereof, reference being hadqto the accompanying draw-fY .Figure l is a perspective View of the forward partof Figure 2 is a side elevation of the saine, embodying The `first partici my invent-ion relates to a combination, with a backing-rod `furnished with a,f tooth on its front end, and working in a slotted plate, se-

slot] on the rear end of the said `backing-rod, in such 'a manner that the said backing-rod willvbe held up in its place onr the under sideof the pole, and at the same time `be'capable of being moved longitudinally to operate the, other parts of this invent-ion,

when the wagon `is descending an incline.

a The second part of my invention relates to anoperation of the rear end of the backing-rod, with a sliding bar, attached to the lower side of thehounds, which will be'` capablejof affecting the several levers and rods `which operate the brakef'bar when the .backing-rod shall be pushed back; theobjectfof this part of my i hination of brake-levers `with invention being to secure 'an L operation of the brake `tln'oughthe medium of the backinglrod, and at the same time to allow` the pole to be freely vibrated vertically in either direction, without straining any part of the wagon or its adjuncts. y i The third p art of .my invention relates tothe compushing and drawing-rods i in snch'a manner that the said levers shall he capable of heilig set, so that their long ends, to which the pushing-rods are attached, may have their distance from i then' fulcra lengthened, or shortened, .as circumstances might require; the objectv of this part ofthe invention being vto make the same brake perfectly adapted to all localitieswith their varied grade of `hills ordescentsand so aiford no'exces'siveaction of thebrake by the average the brake may he used. i

To enable others skilled in the art to make and use `my invention, I will proceed to describe, in reference to the drawings, and the letters f reference marked' thereon, the same letters'v indicating like parts.

vIn the drawingsfl i A represents the forward axle of a wagon. Bare the wheels. (lare the hounds i i 1) is the pole.

-a wagon, viewed from beneath, `illustrating my 'inven-` i 'l back.

grade of such descents in thelocalities- ,1E is the sand-bar. y y Attached to the end of the pole D, on its under side, is a slotted guide-plate, a, figs; 1 and 2, which plate a is properly secured either by bolts or screws b, and' is capable ofbeing shifted either back or forwardLfor the `be worked forward or backward in the said slot c, mov- -ing` the rod d. f

.The rear end of the backing-rodv Z is provided with aTfhead, f, formed vertically back of the rear end of the pole.

Just forward of the said T-head, andin the said rod V d, is a slot, which slot works'ontside the bolt g, which passes through the pole D vertically, arid holds up the `said rod d, and permits a longitlnlinal movement ofthe said rod.

Placed across the hounds C, on their lower back of the pole, and in conjunction with the rod (I, is a" bar, h, which I denominate the sliding bar.

` Thesaid sliding bar is held in place up to the said hounds by the staples i, which staples are secured to the" hounds C. Y

The said slidingfbaris also provided with holes, each 'at a little distance from its centr, to. receive the pivot- .cnds of its"connectingrods, which it is to operate, and

the saidbar h isitself affected and operated by the T headed end of the rod fl, when the said rod l is crowded -Pivoted to the hounds C, back `of` the axle, are the leversv 7:, which levers are provided with several holes l,`in their longest ends, any of which holes l may reccive the rear pivot-ends of the pushing-rod m, to effect 'the desired movement of the said levers, as may be l communicated by the said rods m from the y, sliding bar h, with which the rods m connect.

-The rods m pass backi from the bar h to the said levers 7.1, through the space between the axle-bed A and the sand-bar E as shown in ii 2 and aresteadied laterally by means of eyes n, secured to either the said axle-bed orthe sand-bar.

Connecting lwith the short end of ihclevers 1f, are

the drawingrods o, which connect with the usual- 'brake-bar P, in any suitable manner, and operate it.

`Placed forward of the brake-bar P, and attached thereto, and bac-kv of the sway-bar q, is the spring r. 'lhe ends of the said spring may be made to bear either against the back of the saidsway-bar, or against any suitable support attached to the hounds, so that a will a'ect the levers k more or less, according to the distance the rear pivot-ends of the rods m may be set from the fulcrum 0f the said levers. iVhen thus affected, the said levers will pull on the rods o, and draw the brake-bar l forward, and force the brakeblocks s in Contact with the wheels B.

lhen tlle descent has been passed, and the ring of the neck-yoke has released its pressure on the tooth c,- tlxe springr will throw the brake-bar .P back, and effect a reverse movement of all parts of the brake, preparatory to some subsequent action.

Should the general grades of hills or descents in a locality be but slight, I would pivot the pushing-rods m to the levers k near to their fnlcra, and also secure the plate a at the end of the pole forward. If such descent were great, .I would pivot the said rods any at the ends ofthe levers 7;, and shitt the pla-te ato back, as shown by dotted lilies in tig. 2, but if a medium grade,

I would pivot them between the nigh and further poles l in the said levers, and place the plate a as to correspond; and by so doing in either case, I can adapt, and make the brake suitably efficient for the general grade of descents over which the wagon is to usually travel. By reason of the non-attachment of the pushing-rod d with the bar h, and the action of the said rod (l on the said bar h by, conjoining contact, only the end of the pole of the wagon can be raised up or thrown down without endangering, straining, or otherwise ai'- fecting any part ofthe wagon or its appurtenances.

Having described my invent-ion,

What I claim, andrdesire to secure by Letters Patent, is

l. The combination and arrangement of the T-head, pushing-bar d, sliding cross-bar h, pushing-rods m mi, levers k 7.1, draw-rods o o, and shoe-bar P, for the purpose set forth.

2. The combination and arrangement of the levers k k, provided withgraduating-holes l 7, or their equivalents, the drawing-rods o o, and shoe-bar I, when motion is communicated to said levers by the pushingrods d -my on, or the equivalents of these parts.

WlLLIAM H. BRADT.

Witnesses:

ALEX. SELKIRK, MICHAEL SLUNGERLAND. 

